Let do some math: A 1907 Argentine & Gray's Peak/ Colorado & Southern timetable shows train # 56 (The Gray's Peak Special) leaves the Silver Plume depot at 4:00 PM and arrives at the depot at Georgetown at 4:17 PM. The distance between the two stations is 4.1 miles. I think that makes a average speed of a little over 14 MPH and that does not include the time to stop the train on the mainline at Georgetown and back-up the train up the short spur to the spot at the Georgetown Depot! Other timetables usually show down the hill in 20 minutes for 4.1 miles. Up the hill took 22 minutes. Allthough the film speed obviously seams to be speeded up, some of transitions in some of the curves/tangents appear to laterally knock some of the passengers around pretty good.